Husqvarna 439 Workshop Manual Repair
Husqvarna 439 Workshop Manual for the Repair and service of the Husqvarna 439 chainsaw. The PDF workshop service manual has accurate, easy to understand information and diagrams to help repair and service the chainsaw. Service Information to help you to troubleshoot, repair and fix the Husqvarna 439 chainsaw. View pages online or download a complete PDF service manual that you can easily save, print or view on any device.
Husqvarna 439 Workshop Manual Contents
Contents, Introduction, Safety Regulations, Symbols, Technical data, Service tools, Service data, Safety equipment, Starter, Electrical system, Centrifugal clutch, Lubrication system, Carburetor, Tank unit, Anti-vibration system, Piston and cylinder, Crankcase and crankshaft, Troubleshooting, Repair Instructions.
Carburetor – General Chainsaw Adjustment
Adjusting the carburettor involves adjusting the engine to the local conditions e.g. climate, altitude, fuel and type of two-stroke oil. The carburettor is equipped with three adjustment options.
L = Low speed jet
H = High speed jet
T = Idling adjustment screw
The L and H jets adjust the fuel flow to match the airflow that the throttle valve opening allows. Turning them clockwise makes the fuel/air mixture weaker (less fuel in relation to the amount of air) and turning them anti-clockwise makes the fuel/air mixture richer. A weak mixture increases the engine speed and a rich mixture decreases the engine speed. The T screw controls the throttle position when idling. Turning the T screw clockwise gives faster idling; turning it anti-clockwise lowers idling speed (see manual for complete guide).
See the complete service workshop manual, carburetor manual, parts list, operator manual and technical supplements PDF downloads. Also the repair and service articles available on this website for more information on how to service, repair and find parts for the chainsaw.
Husqvarna 439 Chainsaw Specifications
|Cylinder displacement||35.2 cm³
|Power output||2.01 hp
|Maximum power speed||10 000 RPM|
|Fuel consumption||408 g/kWh|
|Idling speed||2 900 RPM|
|Spark plug||NGK CMR6H|
|Torque (max)||1.57 Nm|
|Weight (without cutting equipment)||8.64 lbs
|Recommended bar length (min)||12” (30 cm)|
|Recommended bar length (max)||16” (40 cm)|
|Oil tank volume||0.42 US pint
|Sound power level, guaranteed (LWA)||112 dB(A)|
|Sound power level, measured||112 dB(A)|
|Sound pressure level at operators ear||100 dB(A)|
|Equivalent vibration level (ahv, eq) front handle||8.0 m/s²|
|Equivalent vibration level (ahv, eq) rear handle||5.2 m/s²|
Read the Husqvarna 439 Workshop Manual for more chainsaw specs.
The Husky 439 is a compact and very light, medium-range 14” (35 cm) chainsaw. It’s a handy tool for farmers and demanding consumers who need a versatile tool for lighter cutting tasks.
Weighing in at 8.64 pounds (3.91 kg) it’s the lightest one in this range. You can easily position it to prune one limb while leaving the one next to it untouched.
The dimensions of 17.32 x 9.44 x 10” (L x W x H) make it the smallest semi-professional Husqvarna saw.
- Air Injection
- Air purge
- Chain tensioning from the side
- Inertia activated chain brake
- Adjustable oil pump
- Quick-release air filter
- Quick-release air filter cover
- Felling marks
- Smart Start
- Optimized saw body
- Front handle ergonomics
- Auto return stop switch
- Chain break window
Like most Husqvarna chainsaws, it uses a 2-stroke (or 2-cycle) air-cooled engine. This model specifically has a 35.2 cc engine, that can produce up to 2.01 horsepower, which is enough for any medium-duty work. It can cut through most trees without getting bogged down.
The engine uses efficient X-Torq technology which cuts fuel consumption up to 20% and decreases emissions. This saves you money on fuel and you’ll breathe fewer fumes. It’s also CARB compliant.
It uses a gas and oil mix for fuel. The ratio is the usual 50:1 (gas to oil). It’s important to use good quality unleaded gas with at least an 87 octane rating. In fact, it’s recommended to use 89 or better, just to be safe.
Since it produces so little vibrations, you’ll be able to make accurate and clean cuts, even after using it for a while. You can further increase your quality of life by getting a pair of anti-vibration gloves.